CN103498762A - Mechanical energy storage wind turbine system - Google Patents
Mechanical energy storage wind turbine system Download PDFInfo
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- CN103498762A CN103498762A CN201310491620.5A CN201310491620A CN103498762A CN 103498762 A CN103498762 A CN 103498762A CN 201310491620 A CN201310491620 A CN 201310491620A CN 103498762 A CN103498762 A CN 103498762A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/74—Wind turbines with rotation axis perpendicular to the wind direction
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E70/00—Other energy conversion or management systems reducing GHG emissions
- Y02E70/30—Systems combining energy storage with energy generation of non-fossil origin
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Abstract
The invention discloses a mechanical energy storage wind turbine system which comprises a draught fan, an air thrust bearing, a power generator, an electric power converter and a motion mechanical energy storage unit, wherein the draught fan is a vertical axis wind turbine which is provided with blades and a rotor, the blades are in mechanical connection with the rotor, the air thrust bearing is located below the draught fan and is connected with and supports the draught fan, the power generator is driven by the rotor, the electric power converter is connected with the power generator and controls the power generator to output electric power to an electric power system or electric equipment, and the motion mechanical energy storage unit is connected with the draught fan and the power generator and then is connected to the electric power converter through the power generator. According to the mechanical energy storage wind turbine system, wind energy storage is achieved through the mechanical energy storage unit by means of the physical method, and limitation of chemical batteries is broken through; the vertical axis wind turbine and the air thrust bearing are adopted; the motion mechanical energy storage unit is adopted to store and release energy, energy storage and power generation are carried out in sequence, power generation is not affected by wind power anymore, and electric power quality is guaranteed. The mechanical energy storage wind turbine system is suitable for power utilization in villas, small-scale communities, small-scale microwave communication stations, movable communication base stations and the like.
Description
Technical field
The present invention relates to a kind of wind generating unit, relate in particular to a kind of mechanical energy storage wind-power generating system.
Background technique
In various distributed generation technologies, wind-power electricity generation, as a kind of safe and reliable clean energy resource, has been subject to the favor of various countries' energy circle.Since early 1990s, the development of wind-power electricity generation is very rapid, and the annual average rate of increase of world's installed capacity of wind-driven power has surpassed 30%.According to estimates, the electric motor power of world's wind-powered electricity generation unit will reach 12.45 hundred million kW to the year two thousand twenty, accounts for 12% of world's power consumption.Therefore, wind energy will be the most promising green energy resource of 21 century, be the main new power source of human social.China is second-biggest-in-the-world energy-consuming state after the U.S., and the coal resources of China are very poor.The wind-power electricity generation cause of developing china, for the growth momentum that keeps China's economic, for protection of the environment, lower the coal resources depletion rate fairly obvious economy, strategy and social effect are arranged.
Wind-power electricity generation is to utilize wind energy to generate electricity, and wind power generating set is the machinery that is electric energy by wind energy transformation.Wind wheel is the topmost parts of wind-powered electricity generation unit, blade and wheel hub, consists of.Blade has good power profile, and can produce aerodynamic force under the effect of air-flow is the wind wheel rotation, is mechanical energy by wind energy transformation, then drives generator by the gear-box speedup, and mechanical energy is transformed to electric energy.Then need in the foundation specific requirement, by suitable conversion, it is stored as to chemical energy or grid-connected or be directly load supplying.
As can be seen here, energy storage technology has important effect in wind-power generating system, shows:
In Stand-alone Operation Wind Generation System (wind power generating set is independent of the load power supply), because the variation of wind speed has randomness, and the power that blower fan is caught is directly proportional to the quadratic power of wind speed.Therefore, the variation that wind speed is little will cause the larger variation of wind-powered electricity generation unit output power, and while adopting the wind-powered electricity generation unit directly to the load power supply, the output voltage of wind-powered electricity generation unit and frequency will be all unsettled, and the power supply quality of power supply can't guarantee.Variation due to wind speed has intermittent characteristics again, and when wind speed is low, the wind-powered electricity generation unit can't, to the load power supply, make the reliability of power supply also be difficult to guarantee at all.For this reason, usually all must be equipped with certain energy-storage units in the independent operating wind power system.Energy-storage units can be when wind energy be more sufficient, the electrical power storage of wind-powered electricity generation unit surplus is got up, when wind energy is not enough, the energy stored in energy storage device is discharged to the load power supply, when wind speed is low while causing wind-powered electricity generation unit cisco unity malfunction, by energy-storage units separately to the load power supply.Adopt this method, just can realize the effective buffering to wind power output power, not only can improve the utilization ratio of wind energy, and improved the reliability of wind-powered electricity generation unit to the load power supply.
In the wind-power generating system of actual motion, energy-storage units is selected batteries to store energy usually at present.In wind-power generating system, the investment of storage battery is very large, according to data, shows, the investment of batteries to store energy equipment has accounted for 1/3 left and right of wind power system investment.Yet the storage battery volume is huge and expensive, its life-span is often shorter again, is only 1/2 of fan life usually, and simultaneously, discharging and recharging temperature of storage battery is more responsive, and the rate of fault while frequently discharging and recharging is very high, therefore causes the operation maintenance difficulty.In addition, storage battery also can produce and pollute surrounding environment after scrapping.
Summary of the invention
The present invention by the mechanical energy energy-storage units, utilizes physical method to realize the wind energy energy storage, has broken through the limitation of chemical cell, and a kind of mechanical energy storage wind-power generating system of efficient, energy-saving and environmental protection is provided.And broken away from traditional output power of wind power generation with wind-force size variation shakiness, the drawback that output can not be supplied with according to electricity needs.
In order to solve the problems of the technologies described above, the present invention is solved by following technical proposals:
A kind of mechanical energy storage wind-power generating system comprises: blower fan, and described blower fan is vertical shaft fan, with blade and rotor; Described blade is connected with rotor mechanical; The air thrust-bearing, be positioned at blower fan below, connects and support blower fan; Generator, it is driven by this rotor; Electric power converter, it is electrically connected to this generator, and controls the electric power of the output from described generator to electric power system; Also comprise the motion mechanical energy storage unit, described motion mechanical energy storage unit connecting fan and generator, and then be connected to electric power converter by generator.
Further improvement for above technological scheme, described motion mechanical energy storage unit, it comprises support, controller and gearbox, also comprise driving shaft, driving shaft is connected with gearbox by first clutch, on driving shaft, also by several second clutches, is installed in parallel in several energy storage device of establishing plane scroll spring.
For the further improvement of above technological scheme, described energy storage device comprises driven shaft, plane scroll spring and energy storage cylinder, and by 1 sun gear, 3 planet wheels, 1 planetary gears that gear ring forms; Described sun gear and driven shaft are affixed; Energy storage cylinder is arranged on the gear ring outside and supports 3 planet wheels as planet carrier; One or many rhizoplanes volute spring in parallel respectively are set on the position of the planet axis of 3 planet wheels in entering energy storage cylinder; Plane scroll spring one end is connected with planet axis, and the other end connects energy storage cylinder; Driving shaft passes through from the inside of driven shaft, and an end of driven shaft is connected by second clutch with driving shaft.
For the further improvement of above technological scheme, a linkage control device that to a certain amount of rear next energy storage device that certainly is dynamically connected, it is started working in this energy storage device energy storage is set on described each energy storage device.
For the further improvement of above technological scheme, described linkage control device comprises a linked gear, the external tooth engagement of its external tooth and gear ring; Also comprise the couple axle fixing with linked gear, limit sliding chutes, stop nut, and at the limit sliding chutes two ends, a limit switch respectively is installed; Also comprise the connecting move control system; Described couple axle is screw thread at one section that is positioned at above limit sliding chutes, and stop nut is screwed on this screw thread, and the bottom of stop nut is stuck in limit sliding chutes.
Further improvement for above technological scheme, described two limit switches are sensitive switch, one of them is the energy storage limit switch, another is for releasing the energy limit switch, respectively when energy storage or release can the time limited nut by the connecting move control system, the first clutch of next energy storage device and second clutch are closed after touching, the clutch of current energy storage device and second clutch are thrown off simultaneously.
For the further improvement of above technological scheme, rotor, by driving mechanism, drives described driving shaft and rotates.
For the further improvement of above technological scheme, described is driving belt or gear mechanism at driving mechanism.
For the further improvement of above technological scheme, driving shaft also connects generator.
For the further improvement of above technological scheme, described controller connects and controls driving shaft and is connected to generator or/and be connected to rotor, or both has been free of attachment to generator and also is free of attachment to rotor.Be convenient to controlled motion mechanical energy storage element energy storage, release and can or close.
The present invention, by the mechanical energy energy-storage units, utilizes physical method to realize the wind energy energy storage, has broken through the limitation of chemical cell.Adopt vertical shaft fan, effective wind sectional area>70%, wind-engaging and choke Area Ratio>70%; Adopt the air thrust-bearing, reduce vertical axial bearing pressure and resistance; Adopt the motion mechanical energy storage unit to store and release energy, first energy storage, then generate electricity, generating is affected by the wind-force size no longer, guarantees power quality.Be applicable to villa electricity consumption and small community, small microwave operating office, mobile communication base station etc.
The accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present invention.
Fig. 2 is the perspective view of motion mechanical energy energy-storage units of the present invention;
Fig. 3 is the schematic top plan view of motion mechanical energy energy-storage units of the present invention;
Fig. 4 is the A-A sectional drawing in Fig. 2;
Fig. 5 is the B-B sectional drawing in Fig. 2;
Fig. 6 is the C-C sectional view in Fig. 2;
Fig. 7 is the vertical view cutaway drawing of energy storage device in the present invention;
Fig. 8 is half schematic diagram of mechanism of energy storage device in the present invention;
Fig. 9 is embodiment of the present invention blower fan structure schematic diagram;
Wherein: 1-controller 1; The 2-gearbox; The 3-first clutch; The 4-axle bed; The 6-second clutch; The 7-energy storage device; The 7a-axle bed; The 7b-gear ring; The 7c-energy storage cylinder; The 7d-couple axle; The 7e-limit sliding chutes; The 7f-stop nut; The 7g-linked gear; The 7h-axle bed; The 7i-planet wheel; The 7j-planet axis; The 7k-sun gear; The 7m-plane scroll spring; 7n-releases the energy limit switch; 7p-energy storage limit switch; The 8-steel cable; The 9-blower fan; The 10-driving shaft; The 11-brake; The 12-driven shaft; The 13-generator; The 14-electric power converter; 15-motion mechanical energy energy-storage units; 16-air thrust-bearing; The 21-blade; The 22-ventilated port; The 23-coupling shaft; The 24-barge board; The 25-rotor.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the present invention is described in further detail:
A kind of mechanical energy storage wind-power generating system as shown in Figure 1, comprising: blower fan 9; Air thrust-bearing 16, be positioned at blower fan 9 belows, connects and support blower fan 9; Generator 13, it is driven by this rotor; Electric power converter 14, it is electrically connected to this generator 13, and controls the electric power of the output from described generator 13 to electric power system; Also comprise motion mechanical energy energy-storage units 15, described motion mechanical energy energy-storage units 15 connecting fan 9 and generators, and then be connected to electric power converter 14 by generator.
As shown in Figure 9, described blower fan 9 comprises the blade 21 for bearing wind-force; The rotor 25 that connects some blades 21; Described blade 21 is provided with a plurality of ventilated ports 22; Also be provided with the barge board 24 suitable with ventilated port 22 on described blade 21, described barge board 24 is connected on blade 21 by coupling shaft 23.When ventilated port 22 is covered by barge board 24, blade 21 can't be ventilative, and the resistance and then the drive rotor 25 that are subject to wind rotate, and realize the effect of blower fan 9.
In figure, lower leaflet 21 is outside wind-engaging, because coupling shaft 23 is fixed on blade 21 inwalls, barge board 24 can only be opened to blade 21 is inboard, barge board 24 is subject to the wind-force effect and inwardly launches, ventilated port 22 is opened, wind sees through ventilated port 22 and flows to blade 21 inboards, reduces the drag effect that lower leaflet 21 is subject to.In figure, top blade 21 is inboard wind-engaging, because coupling shaft 23 is fixed on blade 21 inwalls, barge board 24 can only be opened to blade 21 is inboard, barge board 24 is subject to the wind-force effect and outwards blocks ventilated port 22, be greater than ventilated port 22 because barge board 24 adopts rubber material and area, ventilated port 22 is sealed fully; Top blade 21 is subject to the wind-force effect, and then rotor driven 25 rotates.Like this, blade 21 wind-engaging power effects in top are large, and lower leaflet 21 wind-engaging power effects are little, form a moment, windmill without controlling party to having rotated voluntarily.
The below link air thrust-bearing 16 of described rotor 25, reduce vertical axial bearing pressure and resistance.
As shown in Figure 2 and Figure 3, described motion mechanical energy energy-storage units 15, it comprises support, controller 1 and gearbox 2, also comprise driving shaft 10, driving shaft 10 is connected with gearbox 2 by first clutch 3, on driving shaft 10, also by several second clutches 6, is installed in parallel in several energy storage device 7 of establishing plane scroll spring 7m.
As shown in Figure 7, Figure 8, described energy storage device 7 comprises driven shaft 12, plane scroll spring 7m and energy storage cylinder 7c, and by 1 sun gear 7k, 3 planet wheel 7i, 1 planetary gears that gear ring 7b forms; Described sun gear 7k and driven shaft 12 are affixed; Energy storage cylinder 7c is arranged on the gear ring 7b outside and supports 3 planet wheel 7i as planet carrier; One or many rhizoplanes volute spring 7m in parallel respectively are set on the position of the planet axis 7j of 3 planet wheel 7i in entering energy storage cylinder 7c; Plane scroll spring 7m mono-end is connected with planet axis 7j, and the other end connects energy storage cylinder 7c; Driving shaft 10 passes through from the inside of driven shaft 12, and an end of driven shaft 12 is connected by second clutch 6 with driving shaft 10.For graphic simplicity, only drawn half of mechanism in energy storage device 7 in Fig. 8.
In the present invention, all first clutches 3, second clutch 6 are friction-type electromagnetic clutch, select this kind of clutch can when driving shaft 10 rotates, carry out dynamic clutch.
As shown in Figure 7, on driven shaft 12, near energy storage cylinder 7c place dress brake 11, after throwing off at driven shaft 12 and second clutch 6, driven shaft 12 is braked, the wheel of brake 11 is firm to be fixed with energy storage cylinder 7c.
A linkage control device that to a certain amount of rear next energy storage device 7 that certainly is dynamically connected, it is started working in these energy storage device 7 energy storage is set on described each energy storage device 7.Linkage control device is controlled concrete selecting of certain energy storage device, guarantees to only have one group of energy storage device 7 to be connected with driving shaft 10.
As shown in Fig. 6, Fig. 7, Fig. 8, described linkage control device comprises a linked gear 7g, the external tooth engagement of its external tooth and gear ring 7b; Also comprise couple axle 7d, the limit sliding chutes 7e fixing with linked gear 7g, stop nut 7f, and at limit sliding chutes 7e two ends, a limit switch respectively is installed; Also comprise the connecting move control system; Described couple axle 7d is screw thread at one section that is positioned at above limit sliding chutes 7e, and stop nut 7f is screwed on this screw thread, and the bottom of stop nut 7f is stuck in limit sliding chutes 7e.
Two limit switches are sensitive switch, once stop nut 7f moves to certain limit switch and touches it in limit sliding chutes 7e, just can start the connecting move control system.As shown in Figure 6, one of limit switch for mono-of energy storage limit switch 7p for releasing energy limit switch 7n, respectively when energy storage or release can the time limited nut 7f by the connecting move control system, the clutch of the energy storage device done on the next one is closed after touching, simultaneously by the throw-out-of clutch of current energy storage device.
As shown in Fig. 3,5,7, driven shaft 12 and couple axle 7d two ends in driving shaft 10 and each energy storage device 7 all are fixed on support by axle bed 4, axle bed 7a, axle bed 7h, the energy storage cylinder 7c of energy storage device 7 also fixes with support, in figure, for making mechanism's clarity, does not draw support.
The rotor 25 of blower fan 9, by driving mechanism, drives described driving shaft 10 and rotates.Described is driving belt or gear mechanism at driving mechanism.Driving shaft 10 also connects generator 13.Described controller 1 is controlled driving shaft 10 and is connected to generator 13 or is connected to rotor 25, or both has been free of attachment to generator 13 and also is free of attachment to rotor.Be convenient to controlled motion mechanical energy energy-storage units 15 energy storage, release and can or close.
The working principle of native system work is as follows:
When wind-force is sufficient, connect generator 13 by rotor 25, controller 1 controlled motion mechanical energy storage element 15 is connected to rotor 25.The blade 21 of blower fan 9 rotor driven 25 under the wind-force effect rotates, and by rotating mechanism, as belt or gear transmission, drives driving shaft 10 and rotates.The first clutch 3 that driving shaft 10 is connected with speed reducer 2 is thrown off.Starting stage, controlling the second clutch 6 be connected with the driven shaft 12 of first energy storage device 7 on driving shaft 10 closes, the driven shaft 12 of this energy storage device 7 synchronously rotates with regard to energy and driving shaft 10, sun gear 7k also synchronously rotates as clockwise rotates, planet wheel 7i rotates counterclockwise, 3 groups of plane scroll spring 7m as shown in Figure 5 due to planet wheel 7i be that coaxial (planet axis 7j) rotates, rotate counterclockwise, it just realizes the energy storage purpose for rundown process.When planetary gears moves, gear ring 7b and then rotates counterclockwise linked gear 7g, and after couple axle 7d rotates, the stop nut 7f on it moves right in limit sliding chutes 7e.When stop nut 7f moves to dotted line position in Fig. 5, and after further touching energy storage limit switch 7p, illustrated planar volute spring 7m has tightened to and has to a certain degree stored certain energy, the clutch that the connecting move control system is controlled second energy storage device immediately beginning energy storage of closing, simultaneously by the no longer energy storage of the throw-out-of clutch of first energy storage device, and control brake 11 clamping driven shafts 12, make it can not rotate backward the energy that plane scroll spring 7m has just been stored and discharge.Process, after second energy storage device is stored into surely, then carry out energy storage from the next energy storage device that is dynamically connected according to this.
When wind-force is not enough, controller 1 controlled motion mechanical energy storage element 15 is connected to generator 13, utilizes the energy that the motion mechanical energy storage releasing device stores to drive the generator generating.Controller 1 closes the first clutch 3 be connected with speed reducer 2 on driving shaft 10, gearbox 2 speed changes, then drive driving shaft 10 to rotate counterclockwise 13 generatings of drive generator.Starting stage, the clutch that the driven shaft of last energy storage device that driving shaft 10 is used during with energy storage is connected closes, well control brake 11 processed loosens driven shaft 12 can rotate it, the driven shaft 12 of this energy storage device synchronously rotates with regard to energy and driving shaft 10, sun gear 7k also synchronously rotates and rotates counterclockwise, and as shown in Figure 4, planet wheel 7i clockwise rotates, 3 groups of plane scroll spring 7m equally rotate counterclockwise with planet wheel 7i, and it loosens process and just realizes releasing the energy purpose.When planetary gears moves, now gear ring 7b and then clockwise rotates linked gear 7g, and after couple axle 7d rotates, the stop nut 7f on it is moved to the left in limit sliding chutes 7e.When stop nut 7f dotted line position from Fig. 5 is got back to initial position again, and after further energy limit switch 7n is released in shake-up, illustrated planar volute spring 7m has relax to and has to a certain degree discharged certain energy, the connecting move control system is controlled immediately the next one clutch of the energy storage device of work is closed and starts to release energy, the throw-out-of clutch of current energy storage device is no longer released to energy simultaneously.Process, after second energy storage device discharges certain energy, then released energy from the next energy storage device that is dynamically connected according to this, thereby drive the generator operation generating.
Above a kind of mechanical energy storage wind-power generating system provided by the present invention is described in detail, for one of ordinary skill in the art, thought according to the embodiment of the present invention, all will change in specific embodiments and applications, for example given just a kind of situation of the present embodiment in accompanying drawing.In sum, this description should not be construed as limitation of the present invention.
Claims (10)
1. a mechanical energy storage wind-power generating system comprises:
Blower fan, described blower fan is vertical shaft fan, with blade and rotor; Described blade is connected with rotor mechanical;
The air thrust-bearing, be positioned at blower fan below, connects and support blower fan;
Generator, it is driven by this rotor;
Electric power converter, it is electrically connected to this generator, and controls from described generator to electric power system or the electric power of consumer output;
It is characterized in that, also comprise the motion mechanical energy storage unit, described motion mechanical energy storage unit connecting fan and generator, and then be connected to electric power converter by generator.
2. mechanical energy storage wind-power generating system according to claim 1, it is characterized in that: described motion mechanical energy storage unit, it comprises support, controller and gearbox, also comprise driving shaft, driving shaft is connected with gearbox by first clutch, on driving shaft, also by several second clutches, is installed in parallel in several energy storage device of establishing plane scroll spring.
3. mechanical energy storage wind-power generating system according to claim 2, it is characterized in that: described energy storage device comprises driven shaft, plane scroll spring and energy storage cylinder, and by 1 sun gear, 3 planet wheels, 1 planetary gears that gear ring forms; Described sun gear and driven shaft are affixed; Energy storage cylinder is arranged on the gear ring outside and supports 3 planet wheels as planet carrier; One or many rhizoplanes volute spring in parallel respectively are set on the position of the planet axis of 3 planet wheels in entering energy storage cylinder; Plane scroll spring one end is connected with planet axis, and the other end connects energy storage cylinder; Driving shaft passes through from the inside of driven shaft, and an end of driven shaft is connected by second clutch with driving shaft.
4. according to the described mechanical energy storage wind-power generating system of claim 2 or 3, it is characterized in that: a linkage control device that to a certain amount of rear next energy storage device that certainly is dynamically connected, it is started working in this energy storage device energy storage is set on described each energy storage device.
5. mechanical energy storage wind-power generating system according to claim 4, it is characterized in that: described linkage control device comprises a linked gear, the external tooth engagement of its external tooth and gear ring; Also comprise the couple axle fixing with linked gear, limit sliding chutes, stop nut, and at the limit sliding chutes two ends, a limit switch respectively is installed; Also comprise the connecting move control system; Described couple axle is screw thread at one section that is positioned at above limit sliding chutes, and stop nut is screwed on this screw thread, and the bottom of stop nut is stuck in limit sliding chutes.
6. mechanical energy storage wind-power generating system according to claim 5, it is characterized in that: described two limit switches are sensitive switch, one of them is the energy storage limit switch, another is for releasing the energy limit switch, respectively when energy storage or release can the time limited nut by the connecting move control system, the first clutch of next energy storage device and second clutch are closed after touching, the clutch of current energy storage device and second clutch are thrown off simultaneously.
7. according to claim 2 or 3 or 5 described mechanical energy storage wind-power generating systems, it is characterized in that: rotor, by driving mechanism, drives described driving shaft and rotates.
8. mechanical energy storage wind-power generating system according to claim 7, it is characterized in that: described is driving belt or gear mechanism at driving mechanism.
9. according to claim 2 or 3 or 5 described mechanical energy storage wind-power generating systems, it is characterized in that: driving shaft also connects generator.
10. according to claim 2 or 3 or 5 described mechanical energy storage wind-power generating systems, it is characterized in that: described controller connects and controls driving shaft and is connected to generator or/and be connected to rotor, or both has been free of attachment to generator and also is free of attachment to rotor.
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| CN110617107A (en) * | 2019-10-26 | 2019-12-27 | 陕西德源府谷能源有限公司 | Automatic wind shielding and sealing device for fully mechanized coal mining face corner |
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